Been wanting a aftermarket barrel for a little while so that I could shoot lead out of my G20, and also one a little longer than stock for more velocity. Heard too many bad things about Lone Wolf (either unsupported chamber, or chamber too tight), and didn't want a 6 inch barrel. Ended up going with a Storm Lake 5.3 inch barrel.

Put around 125 - 150 rounds through it today, and it functions perfectly so far, with great case support. I was a little worried about this barrel to begin with, as I thought it may have too much support in the feed ramp area, and was worried about the chamber being too tight (SL chamber measures .428, stock Glock barrel measures .433).

I put 7 factory loads through it, and several different reloads of my own (using new brass, once fired, and multi-fired brass). ALL functioned 100 percent, and velocity gains were from ~40 to 110 fps. I was honestly only expecting about a 50fps gain, AT MOST, but was pleasently suprised with more than that in most cases.

Here's the chrono data. Only used the SL barrel today, so stock barrel velocities were done several weeks ago, but on a day with similar temps, humidity, etc.

I didn't really know so my bad but thanks for the help keep the info coming!!

No Problemo,
I would also recommend using real hunting ammo.
Not standard self defense hollow points.
Animals are a lot harder targets than people.
And penetration is king.
Look at some super hard cast hunting rounds;

A straightforward way of presenting it: As long as the force exerted by the burning powder on the BASE of the bullet is greater than the frictional force of the barrel rubbing on the SIDE of the bullet, the bullet will continue to accelerate. For a straight-walled handgun cartridge, the barrel would have to be almost rifle length for the burning powder to finally fall below that force level.